What volume of 10 N H2SO4 is needed to make 250ml of 1.3 M H3PO4 solution?

Answer 1

Nobody uses N (normality) anymore, but 10N H2SO4 is equivalent to 5 M, so we’ll use that convention.

(X ml)(5 M) = (250 ml)(1.3 M)

x = 65 mls